| Place | Performance | Athlete | Team |
| 1 | 0:49.15 | Q: JORDAAN - JOSHUA | BORDER ATHLETICS |
| 2 | 0:49.64 | Q: PRINS - JADREAN | ATHLETICS SOUTHWESTERN DISTRICTS |
| 3 | 0:49.80 | Q: NDLOVU - MTHOKOZISI | ATHLETICS MPUMALANGA |
| 4 | 0:50.40 | Q: VAN ZYL - KEVIN | CENTRAL GAUTENG ATHLETICS |
| 5 | 0:51.06 | q: MASANGU - TYRAN | ATHLETICS CENTRAL NORTHWEST |
| 6 | 0:52.63 | q: MOTLOUNG - ADAM | ATHLETICS GAUTENG NORTH |
| 7 | 0:52.84 | -: NOBANGELA - WANDISILE | ATHLETICS TRANSKEI |
| 8 | 0:53.38 | -: NIEUWOUDT - EVAN | ATHLETICS FREE STATE |